--- ray/src/gen/gendaymtx.c	2016/08/19 15:13:40	2.24
+++ ray/src/gen/gendaymtx.c	2017/04/28 16:07:34	2.26
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: gendaymtx.c,v 2.24 2016/08/19 15:13:40 greg Exp $";
+static const char RCSid[] = "$Id: gendaymtx.c,v 2.26 2017/04/28 16:07:34 greg Exp $";
 #endif
 /*
  *  gendaymtx.c
@@ -953,7 +953,9 @@ int CalcSkyParamFromIllum()
 		/* Convert illuminance to irradiance */
 		index = GetCategoryIndex();
 		diff_irrad = diff_illum / CalcDiffuseIllumRatio(index);
-		dir_irrad = dir_illum / CalcDirectIllumRatio(index);
+		dir_irrad = CalcDirectIllumRatio(index);
+		if (dir_irrad > 0.1)
+			dir_irrad = dir_illum / dir_irrad;
 	
 		/* Calculate sky brightness and clearness */
 		sky_brightness = CalcSkyBrightness();
@@ -1128,8 +1130,6 @@ void CalcSkyPatchLumin( float *parr )
 	double aas;				/* Sun-sky point azimuthal angle */
 	double sspa;			/* Sun-sky point angle */
 	double zsa;				/* Zenithal sun angle */
-
-	perez_param[0], perez_param[1], perez_param[2], perez_param[3], perez_param[4]);
 
 	for (i = 1; i < nskypatch; i++)
 	{